Carney Abandons a Haven, Leaping Into British Storm

TORONTO—Mark Carney is leaving the helm of the central bank of Canada, one of the developed world's most stable economies, for a post in the U.K., an economy with major problems.

In his wake, he is likely to leave behind a debate here: Just how much was Canada's economic resilience so far due to its central banker, and what will he be able to do to help Britain regain its own economic footing?